IEC 60947-1:2007/AMD2:2014

IEC 60947-1 ®
Edition 5.0 2014-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
A MENDMENT 2
AM ENDEMENT 2
Low-voltage switchgear and controlgear –
Part 1: General rules
Appareillage à basse tension –
Partie 1: Règles générales
IEC 60947-1:2007-06/AMD2:2014-09(en-fr)

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IEC 60947-1 ®
Edition 5.0 2014-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
A MENDMENT 2
AM ENDEMENT 2
Low-voltage switchgear and controlgear –

Part 1: General rules
Appareillage à basse tension –

Partie 1: Règles générales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XA
ICS 29.130.20 ISBN 978-2-8322-1798-6

– 2 – IEC 60947-1:2007/AMD2:2014

© IEC 2014
FOREWORD
This amendment has been prepared by subcommittee 17B: Low-voltage switchgear and

controlgear, of IEC technical committee 17: Switchgear and controlgear.

The text of this amendment is based on the following documents:

FDIS Report on voting
121A/15/FDIS 121A/21/RVD
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of this amendment and the base publication will
remain unchanged until the stability date indicated on the IEC web site under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
_____________
1.1 Scope and object
Replace the existing text of this subclause by the following new text:
This standard applies, when required by the relevant product standard, to low-voltage

switchgear and controlgear hereinafter referred to as "equipment" or "device" and intended to
be connected to circuits the rated voltage of which does not exceed 1 000 V a.c. or
1 500 V d.c.
This standard states the general rules and common safety requirements for low-voltage
switchgear and controlgear, including:
– definitions;
– characteristics;
– information supplied with the equipment;
– normal service, mounting and transport conditions;
– constructional and performance requirements;
– verification of characteristics and performance;
– environmental aspects.
© IEC 2014
This standard does not apply to low-voltage switchgear and controlgear assemblies which are

dealt with in IEC 61439 series, as applicable.

1.2 Normative references
Delete the existing reference to "IEC 60439-1:1999" and its Amendment 1.

Replace the existing references by the following new references:

IEC 60664-1:2007, Insulation coordination for equipment within low-voltage systems – Part 1:

Principles, requirements and tests

IEC 61000-3-3:2013, Electromagnetic compatibility (EMC) – Part 3-3: Limits – Limitation of
voltage changes, voltage fluctuations and flicker in public low-voltage supply systems, for
equipment with rated current ≤16 A per phase and not subject to conditional connection
IEC 61000-4-2:2008, Electromagnetic compatibility (EMC) – Part 4-2: Testing and
measurement techniques – Electrostatic discharge immunity test
IEC 61000-4-4:2012, Electromagnetic compatibility (EMC) – Part 4-4: Testing and
measurement techniques – Electrical fast transient/burst immunity test
IEC 61000-4-6:2013, Electromagnetic compatibility (EMC) – Part 4-6: Testing and
measurement techniques – Immunity to conducted disturbances, induced by radio-frequency
fields
IEC 61000-4-8:2009, Electromagnetic compatibility (EMC) – Part 4-8: Testing and
measurement techniques – Power frequency magnetic field immunity test
CISPR 11:2009, Industrial, scientific and medical equipment – Radio-frequency disturbance
characteristics – Limits and methods of measurement
Amendment 1 (2010)
Add, to the existing references, the new amendments as follows:
IEC 60947-5-1:2003, Low-voltage switchgear and controlgear – Part 5-1: Control circuit
devices and switching elements – Electromechanical control circuit devices
Amendment 1 (2009)
IEC 61000-3-2:2005, Electromagnetic compatibility (EMC) – Part 3-2: Limits – Limits for
harmonic current emissions (equipment input current ≤ 16 A per phase)
Amendment 1 (2008)
Amendment 2 (2009)
IEC 61000-4-3:2006, Electromagnetic compatibility (EMC) – Part 4-3: Testing and
measurement techniques – Radiated, radio-frequency, electromagnetic field immunity test
Amendment 1 (2007)
Amendment 2 (2010)
IEC 61000-4-13:2002, Electromagnetic compatibility (EMC) – Part 4-13: Testing and
measurement techniques – Harmonics and interharmonics including mains signalling at a.c.
power port, low-frequency immunity tests
Amendment 1 (2009)
Add the following new normative references as follows:

– 4 – IEC 60947-1:2007/AMD2:2014

© IEC 2014
IEC 60092-504:2001, Electrical installations in ships – Part 504: Special features – Control

and instrumentation
IEC 60300-3-5:2001, Dependability management – Part 3-5: Application guide – Reliability

test conditions and statistical test principles

IEC 61508 (all parts), Functional safety of electrical/electronic/programmable electronic

safety-related systems
IEC 61649:2008, Weibull analysis

IEC 62061:2005, Safety of machinery – Functional safety of safety-related electrical,
electronic and programmable electronic control systems
IEC 62430:2009, Environmentally conscious design for electrical and electronic products
IEC 62474:2012, Material declaration for products of and for the electrotechnical industry
ISO 13849-1:2006, Safety of machinery – Safety-related parts of control systems – Part 1:
General principles for design
2 Definitions
Replace, in the alphabetical list, the existing references to these terms, modified by
Amendment 1, by the following new references:
Electronically controlled electromagnet . 2.3.36
Maximum cross-section . 2.3.35
Minimum cross-section . 2.3.34
Multiple tip contact system . 2.3.33
Replace, in the alphabetical list, the entry "Over-current discrimination" by the following new
entry:
Over-current selectivity . 2.5.23
Add, in the alphabetical list, the following new terms and references:
Flexible conductor . 2.3.32
Individual enclosure . 2.2.23
Insulation coordination barrier . 2.1.23

Rated control circuit supply voltage . 2.5.67
Rated control circuit voltage . 2.5.66
Rigid conductor . 2.3.31
Solid conductor . 2.3.29
Solid insulation . 2.1.22
Stranded conductor . 2.3.30

2.1 General terms
Add, at the end of the existing subclause, the following new terms and definitions:
2.1.22
solid insulation
solid insulating material interposed between two conductive parts

© IEC 2014
2.1.23
insulation coordination barrier

solid insulating material that is not an integral part, provided for the purpose of increasing

either creepage distances or clearance distances or both
...